Ball-bearing.



F.v STARIN. BALL BEARING.

lMFLICM'IGH FILED JUNE 26. 1915* y l 91 92,457; n www@ my 1916.

2 SHEETSnSHEET i.

www@ j?? f. Smm. BALL BEARING.

A PLICATObf FILED JUN26. 1915. )l l mmm July 1916.

2 SHEETS-SHEET 2.

mamey FRANK STABU?, 0F SPRNGFIELI?, liSSAC/HUSETTS.

BLLwBEARING..

mums

Specification of Letters Patent.

.application filed J une E6, 19l5r Serial No. 36,529.

stitute with the balls retained and separated thereby an assembled unit.The retaining devices and their support 'will be termed vhereinafter thecage, Heretofore, as far as lniovvn, the balls were placed one at a timeinto the ball racevvays, and the retainw` ing members Were assembled inthe racevvays with the support to form a cage. The assembling under theconditions stated takes considerable time, requires great skill and isvery difficult in view of the fact that great care must be taken inorder to insure a proper alinement of the coperating parts.

One of the objects of the present invention is to provide a ballbearing, into the raceways of which an assembled cage with the ballstherein may be conveniently inserted as a unit, thereby obviating thedefects men+ tioned of the ball bearings heretofore in use.

Another object of the invention is to form the cage in such amanner thatundue frietion is prevented between the balls and the said cage.

A further object of the invention is to so construct the bearing rings'that they can be conveniently finished, that is to say ground andpolished, in two operations. Y

With these and other objects in view, which Will more fully appear asthe nature of the invention is better understood, the same consists inthe combination, arrangement and construction ci' parts hereinafterlfully described, pointed out in the append ed claim and illustrated inthe accompanying drawings, it being understood thatfnany changes may bemade in the size andpio portion of the several parts and details ofconstruction within the scope of the appended claim Without departingfrom the spirit' or sacrificing any of the advantages oi the lnventwn.

One of the many possible embodiments of the invention is illustrated. inthe accompanying drawings, in which :W

Figure 1 is a central vertical section taken through a ball bearingconstructed in accordance with the present invention; Fig. 2 is a frontelevation thereof; nig. 3 is a section taken on line 3-3 of Fig. 1; Fig.i is a section taken through one of the separaw torsylig. 5 is aperspective view of said separator; Fig. 6 is a vertical longitudinalsection taken through a chuck used in grinding and polishingthe outer"Wearing ring, the latter being in operative position there on; Fig. 7is a section taken on line 7-7 of Fig. 6; Fig. 8 is a verticallongitudinal sec- Patenten een tion taken through a chuck for finishingthe inner bearing ring, the latter being shown; thereon in operativeposition; Fig. @is section taken on line 5)*9 of Fig. 8; Fig. 10 is asection taken through a mo-dication of the chuck for holding the outerbearing ring; and Fig, il is a similar section taken through aniodiiicationfo a chuck coperating with the inner bearing ring.

Referring now more particularly to Figs.

l to 5, inclusive, the numeral 2O indicates the inner bearing ring,having a bore 21, by

which the said ringinay be secured in any approved manner to an axle orshaft 22. The ring may rest against a shoulder 23 on the said axle orshaft, and is provided with a raceway 24., in alinement with the racenWay 25 of an outer bearing' ring 26. The

ring 26 abuts against a shoulder 27 on a stationary part of the device,to which the ball bearing is applied, more particularly that side of thering 26 isin abutment with the shoulder 27 whichI is opposite to thatside of the ring ZO which rests against the shoulder E23 on the shaft.The raeevvayI of the inner bearing vring .is of the usual scnliguration,to Wit: of curved cross sections :neral E29) of its curved portiontoward that side of the ring which is opposite to the side abuttingagainst the shoulder 27.

The cage comprises a ringshaped niember 30, which is disposedtransversely of and y, before the bearing is properly assembled.

The ends of each U-shaped plate member are provided, with lugs 33, bymeans of which the said retaining element is attached to the supportingring 30. For this purpose the said supporting ring is provided withradial slots 34, in each of the same being seated tivo juxtaposed lugs38 of two adjoining plate members 31, the said lugs being bent upon theouter face of the supporting ring, as clearly shown in Figs. 1 to 3,inclusive. The plate members 3l are made of comparatively soft material,for instance brass, and preferably formed by stamping. ln the inner faceof the base 32 of each plate member is formed a slight depression and inalinement therewith is made in the supporting ring a similar depression36. Each plate member loosely embraces a ball, such ball being seated inthe registering depressions in the plate member and in the supportingring. It is to be observed that the balls do not Contact With the sides37 ofthe plate members 31, but only With the depressions 35 in the basesthereof and with the depressions in the ring 30; friction between theballs, their retaining members and the supporting ring is, therefore,effectively prevented. The plate members 3l extend transversely of theraceways, and are disposed at an angle to the longitudinal axis of theshaft 22 in order to have the edges of their sides 37 disposedsubstantially equi-distantly from the racevvays. This arrangementbecomes necessary in view of the straight portion of one of theraceways. Obviously if the plate members were arranged parallel to thelongitudinal axis of the shaft, their edges would not be disposedequidstantly from the racevvays, and, therefore, co ld not y supportproperly the bearing balls.

'In the outer face of the 'inner bearing ring are formed two annularrecesses, indicated at 38 and 39, said recesses extending rfrom thesides of the ring toward the race- Wavpwhereby shoulders 40. are formedon both sides of the raceway. ln a similar manner are provided in. theinner face of thel outer bearing ring annular recesses 41 and v42 andshoulders 43. The purpose of this arrangement Will be explainedhereinafter. y

From the foregoing it appears that the cage 'with the balls thereinconstitutes an asmaar@ sembled unit; its parts can be easily 'puttogether upon the inner bearing ring, and the outer bearing ring can beslid, after assembling, over the cage. Ubviously, the assembling of thecage can thus be more easily effected than in the bearings heretoforein,

holding the said ring properly upon the said chuck. A grinding Wheel 46serves t0 finish the outer face of the ring and the side 47 thereof, anda' grinding wheel 48 the raceivay of/the saine. After this operation thechuck is inserted into the recess 4l of the ring, and the grinding Wheel46 used to grind and polish the side 49 of the same. The inner bearingring is mounted upon a chuck 50, (Figs. 8 and that first engages therecess 39 therein, a compression member 5l assuring a proper gripping ofthe jaws of said chuck. A Wheel 52 grinds and polishes thepinner'face ofthis ring and its side 53, and a wheel 54 the raceway of the same. rlhechuck is then engaged with the recess 38 in said ring, and the grindingWheel 52 used to finish the side 55 thereof.

In the device described above, the sides of the recesses in the bearingrings form part of a cylindrical surface. ln the modification shown inFigs. l() and il of the drawings the sides of the recesses are conical.The chucks must, therefore, be shaped correspondingly. By thisconstruction a better grip on the rings is obtained with lessl Work.

lt is to be observed that, ivhileherein the outer bearing ring has beendisclosed as having araceway provided ivith a straight portion and theinneifrng a raceway having a curved cross section, this arrangementcould be reversed Without 4departing from the invention. In the appendedclaim the eX- treme diameterlof the unit, that' isfto say of thevassembled cage and balls therein, refers to either the largest orsmallest diameter, or in other Words to the outer or inner diameter.

l/Vhat l vclaim is ln a ball bearing, the-combination with two bearingrings having ra'ceways, one of said raceivays beingof curved crosssection and the. other one having a curved portion and a straightportion running from 4the curved portion toward one of the sides of therespective. rings, balls running in said' raceivays, a supporting ringdisposed outside of said raceivays, and a plurality of U- shaped ballretaining ,members embracing Said balls and being attached to said supporting ring, said retaining membersexn Signed at Springfield, in th@county of tending at an acute ange to the longtuinaly Hampden and Stateof Massachusetts, this 16 abras 0f said bearing rings, said supporting23rd day of June, A. D. 1915.

a'uut5 and the diameter of said straight porring, Retaining members andballs forming FRANK STA-RIN tion of ong-of the racewafys being equal toVtnesses:

'one of th@ extreme diameters of the unit WINFIELD S. LEE,

thezenvf LADIsLAUs MARKUS.

